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RE: [PSUBS-MAILIST] revelation

Jim,
 
    There will be a surface unit available thanks to Alec Smyth.
    This will be used and will be available  to all of from the pier or launching boat for our tinkerings. I would hold off for now trying to aquire a surface support unit until we find what performance we get from the various devices out there. In this way you can make a more informed purchase.
 
                                                                                                                                                   David Bartsch
 
Date: Sat, 20 Feb 2010 12:56:41 -0600
Subject: Re: [PSUBS-MAILIST] revelation
From: kocpnt@tds.net
To: personal_submersibles@psubs.org

Hi David,
 
I've been thinking about communication for a while and watching your posts and progress.
 
I am not electronically and have no desire or time to try to reinvent the wheel.
 
When you suggested this approach I went to ebay hoping you coud assist with the balance of the hook-up.
 
I plan on using mine in the sub. If necessary I might buy a surface unit for Florida.
 
I just installed all the internal plumbing to ballast tanks and completed low pressure testing - 100 PSI air and found two small leaks with soap and water spray. Hopefully this weekend I will have them remedied.
 
Best egards,
 
Jim K

On Sat, Feb 20, 2010 at 10:15 AM, David Bartsch <dbartsch2236@hotmail.com> wrote:
Jim,
 
   That's not a problem at all. In fact, I need to produce a transducer/hydrophone pair for kyle's surface boat and an additional pair for Alec's for use at this coming convention. I will gather...ok, you have me curious, did you have an idea this would work as an underwater comms unit already?
   In the next few days or weeks, I'll get an idea as to how many will be needed and mass produce them in an assembly like fashion. Ordering the two part molding plastic in larger quantities will save costs too.
   Will your hailer be used as a dipping system for surface boat deployment or for aboard your sub? i ask this to figure interface cable length.
   Anyway, no this is not a problem at all. We will discuss this further in the next few days.
 
                                                                                                                                                 David Bartsch 
Date: Sat, 20 Feb 2010 09:37:33 -0600
Subject: Re: [PSUBS-MAILIST] revelation
From: kocpnt@tds.net
To: personal_submersibles@psubs.org


Hi David,
 
I just purchased a GS3000s hailer/VHF Radio on ebay. I hope you can help me put the rest of the system toghther when it arrives!
 
Best Regards,
 
Jim K

On Sat, Feb 20, 2010 at 4:39 AM, David Bartsch <dbartsch2236@hotmail.com> wrote:
To all:
 
  Ever heard of a marine hailer?
 
  These things are designed to allow bullhorn type communications from one's dry wheelhouse during rainy and windy weather to other nearby boats.
 
  Take the airborne bullhorn away and replace this with an underwater voice transmitter and also replace the returning pickup microphone with an HBH-2 hydrophone and you have a ready made underwater broadband communications unit!
 
  To make this even more appealing, some newer units are about he size of a new cb console and even contain VHF radios to boot!
 
  Go to ebay and just look at the Standard Horizon Matrix GX3000s Marine hailer and VHF radio. This is for a new unit and its $188.00 and this includes shipping!
 
  Too pricy?... boat yards frequently sell off new but old stock items to make room for incoming merchandise.
 
  Take the Cybernet CTX 100 Marine hailer and intercom also showed on ebay. This old but never sold hailer is going for $49.99 with a $12.00 shipping fee. This is its second such listing.
 
  These hailers run circles around anything I have thus far produced and some have extra desired features to boot...seems I am soon to be out of a job short the transmitters and hydrophones. I can live with this as It was my goal to inspire interest in passive sonar and underwater comms to the point that most subbers look into building or buying something. My goal I feel is soon to be met.
 
  If your not quite convinced, have a look at Alec's old stock but never sold Ray Jefferson in action at the coming convention. He has graciously allowed us to us it for the support vessel and this gives us a chance to run one thru its paces first hand.
 
  To anyone who buys any hailer, I will be here to aid in the construction of the voice transmitters and passive hydrophones or I can assist you in making them as these are not too difficult.
 
                                                                                        David Bartsch

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